Shingle-planing machine



July

C. J. MELBY SHINGLE PLANING MACHINE Filed June 9, 1926 ATTORNEY 'PATENTOFFICE,

omnes .1. mamy, or nvnnnnrrr, WASHINGTON.

sHINeIJs-rLANrNe' MAcHINn.

Appiioamn ma .rune a, 192e. semi No. 114,616. i

This invention relates to a machine for planing taper-sawed shinglesand, more especially, for surface grooving the same to produce what isknown asshake-shingles..

5 The object ofthe invention is the 1mprovement of machines of thecharacter above referred to.

In the accompanying drawing,-

Figure 1 is a plan View, with parts broken i away, of a shingle planingmachine embodying my invention; Fig. 2 is a longitudinal verticalsection of Fig. 1 and illustrating a shingle a plied; and Fig. 3 1s atransverse section on line 3-3 of Fig. 2. Fig. 4 is a l5 plan view ofthe shingle-grooving cutter knife, shown detached. Fig. 5 is aperspective view of a grooved `shingle as produced by the shake-shinglemachine illustrated 1n the preceding views.

The machine frame may be of any suitableY construction and, asillustrated-.1ncludes longitudinal side rails 11, supporting legs 12,and spaced apart bed plates 13 an 14 which are rigid with said siderails at 25 the respective ends of the frame.

15 represents a horizontallydisposed cutter head whose arbor `151 is`iournaled in bearing boxes 152 secured to said side rails 11 inproximity of the inner edge 141. of the 3 bed plate 14. Upon one of itsperipheral surfaces said head has secured thereto a cutter knife 16'which, as shown in Fig. 4, 1s

provided in its outer surface with a series of alternatingr ridges andgrooves 18, parallel with .each other and in rectangular relation to theaxis of their revolution.

Said knife is beveled at its front, or leading side, to afford a cuttingedge 19 at the intersection of the plane of suoli front side 40 with thecorrugated surface of the knife. In practice, the weight of the knife 16is balanced by a `counterweight or, as shown,

- by means of a second knife 20 which 1s not provided with corrugationsand has a straight cutting edge.

By adjusting the knives with respect to each other and to the work,either knife may be utilized for cutting separately but not together,such for instance, as when planing a plane surface, the knife 2O wouldbe regulated to have its strai ht cut-ting edge travel in an orbit oflarger iameter than the orbit to which the irregular cutting edge 19 ofthe knife 16 is positioned; and, vice versa, when the knife 16 is to beemployed for -grooving a shingle.

The cutter head 15 is driven by means of a belt 22 passing about apulley 23 which is mounted upon the arbor 151. Positioned in the openingbetween the cutter head 15 and the bed plate 13 and constituting, ineffect, a continuation of the latter, is a plate 24, hereinafterdesignated as the lifting plate which is hingediy connected at 11s frontemi to the machine frame as by means of a pivot rod 25 extending throughapertured lugs, such as 26, of the lifting plate.

27 represent springs interposed between a bridge member 28 of themachine frame and the free end of the lifting plate, said springstending to yieldingly retain the lift-v ing plate in its u ermostposition. The elevation of the li ting plate is limited by the provisionof stops 29, such as nuts, taking upon threaded bolts 30 depending fromthe lifting plate through holes provided in the bridge member 28 andarranged to engage against the latter.

Supplementary to and located above the lifting plate 24 is a pressureplate 31 of a length to extend above the bed late 14 to the rear of thecutter head. Sai pressure plate is formed or provided with transverselyarranged reinforcing bar elements 311 having at each side of the plateproper apertures through which respectively extend vertical guide rods32 rigid with the frame.

These rods are screw threaded to receive nuts 33 below the presser platebarelements to limit the downward movement of the same.

Threaded upon these guide rods above the presser plate are nuts 34 forconfinin springs 35 which are mounted upon the ro s and act toyieldingly retain the presser plate against the stops 33.

37 represent endless chains, one at each side of the machine, passingabout sprocket wheels 38 and 39 and through guiding channels 40 mountedupon the respective side rails 11 of the machine frame.

The sprocket wheels 38 and 39 are respectively mounted upon shafts 381and 391 which arejournaled in bracket boxes 48 or an equivalent providedon the frame.

Transversely arranged attachments 41 are connected to said chains toeffect the feeding of the work when the chains are driven as by means ofa power belt 42 passing about a pulley 43 provided therefor on the shaft391.

The character of the work performed in the machine by the fluted cutterknife 19 is illustrated in Fig. 5 and is known in the art as ashake-shingle. This type of shingle is produced from ata er-sawed shinle having upper andi lovver p ane surfaces y'cutting grooves 44longitudinally of the shingle' 1n one of its surfaces, said groovesextending from the butt end of the shingle to within a short distanceof, the shingle point 45, the ungrooved plane portion 1.1.6 of suchsurface being intended to underlie the butt end of the shingle in acourse next above 1n the shingling of a roof.

In operation, a shingle, as indicated by 5,'

placed with its point in front u on the bed plate 13 will be engaged atits utt end by an attachment 41 of the feed chains 37 to be propelledthereby.

The shingle is thus fed point first upon the lifter plate 24 keeping theshin le above the cutting circle of the cutter an against the undersurface of the presser plate 3l.

When in its continued travel the thickness of the shingle abovel thecutter head exceeds the space between the presser plate and the cuttingcircle, the planing of the shingle occurs and continues until the buttend of the shingle has passed beyond the cutter head. When a planecutting knife, as explained with reference to the knife 20, is employedthe surface of the shingle acted upon will be finished to a plane; butWhen the fluted cutter knife 16 is employed the shingle surface actedupon Will be grooved 'as represented in Fig. 5.

By regulating the operating cutter knife to have its cutting edgerevolve in a cutting circle of more or less diameter, the extent of theprotrusion'of the cutting circle above the plane of the upper surface ofthe frameplate la- Will determine the depth cut into a shingle.

It is to be noted that the presser plate 3l is supported by the stops 33(Fig. 3), and

- that the presser plate is yieldingly held in operable position bymeans of springs 35 located at both sides and in proximity with bothends of the presser plate. The springs 35 which actuate the presserplate are-of greater ower than the springs 27 Which actuat-e tie lifterplate. In practice a shield plate is desirably provided to' protect thesprings 27 from shavings projected by the cutter knife. l

1. In a shingle-planing machine, a rotary lcutter-head, a grooved planerknife mounted upon said cutter-head, means to progressively feed ashingle upon the machine, spring pressed lifting means acting to elevatea shingle out" of the cutting re ion of said planer knife until after anen portion of the shingle has traveled beyond said cutting region, and aspring pressed means engageable by the shingle to effect movement of theshingle into said cutting region for grooving the shingle from saidportion to the other end of the shingle.

2. In a shingle-planing machine, a' cutterhead, a planer knife therefor,said planer knife being grooved upon its outer side With respect to thecutter-head, shingle feeding means, means to elevate the point end of ashingle out of cutting relation with said planer knife, and means actingsubsequently to the aforesaid means to regulate the shingle to have itsunder-surface grooved by the planer knife.

3. In a shingle-planing machine, the combination with the machine frameincluding a top comprising two horizontally spaced apart bed elements,and a rotary cutter located between said bed elements, of a presserplate located above the cutter and provided with guideways, postsextending upwardly from said frame through said Ways for guiding thepresser plate, means adjustable upon the respective posts to limit the.downward movement of said plate, sprlngs mounted upon said posts foryieldably retaining the plate in its lowermost position, a lifter platehingedly connected to said frame and having its free end extend into thespace beneath said -presser plate, resilient means tending to ret-ainthe free end of the lifter plate in its uppermost position, said presserplate and lifting plate being arranged to be influenced by the feedingof a shingle therebetween to raise and lower the same into cuttingrelation with said cutter, and means to effect the feeding of theshingle.

Signed at Seattle, day of April, 1926.

CHARLES J. MELBY.

Washington, this 20th

